Understanding the relation between thermal Sunyaev-Zeldovich decrement and halo mass using the SIMBA and TNG simulations

Abstract

The relation between the integrated thermal Sunyaev-Zeldovich (tSZ) $y$-decrement versus halo mass ($Y$--$M$) can potentially constrain galaxy formation models, if theoretical and observational systematics can be properly assessed. We investigate the $Y$--$M$ relation in the SIMBA and IllustrisTNG-100 cosmological hydrodynamic simulations, quantifying the effects of feedback, line-of-sight projection, and beam convolution. We find that SIMBA's AGN jet feedback generates strong deviations from self-similar expectations for the $Y$--$M$ relation, especially at $M_{500}<10^{13}{M}_{\odot }$. In SIMBA, this is driven by suppressed in-halo $y$ contributions owing to lowered halo baryon fractions. IllustrisTNG results more closely resemble SIMBA without jets. Projections of line-of-sight structures weaken these model differences slightly, but they remain significant -- particularly at group and lower halo masses. In contrast, beam smearing at $\text{Planck}$ resolution makes the models indistinguishable, and both models appear to agree well with $\text{Planck}$ data down to the lowest masses probed. We show that the arcminute resolution expected from forthcoming facilities would retain the differences between model predictions, and thereby provide strong constraints on AGN feedback.

14 pages, 7 figures. Accepted by MNRAS, comments welcome

References in corpus (18)

• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• Simulating galaxy formation with black hole driven thermal and kinetic feedback
• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• The Circumgalactic Medium
• The COS-Halos Survey: Physical Conditions and Baryonic Mass in the Low-Redshift Circumgalactic Medium
• A measurement of secondary cosmic microwave background anisotropies from the 2500-square-degree SPT-SZ survey
• The NIKA2 large field-of-view millimeter continuum camera for the 30-m IRAM telescope
• The redshift evolution of massive galaxy clusters in the MACSIS simulations
• Simulating Groups and the IntraGroup Medium: The Surprisingly Complex and Rich Middle Ground Between Clusters and Galaxies
• Black Hole -- Galaxy Correlations in Simba
• \textsc{The Three Hundred} project: The \textsc{Gizmo-Simba} run
• How baryons affect halos and large-scale structure: a unified picture from the Simba simulation
• NIHAO XIX: How supernova feedback shapes the galaxy baryon cycle
• Gas distribution from clusters to filaments in IllustrisTNG
• Baryonic mass budgets for haloes in the EAGLE simulation, including ejected and prevented gas
• Testing Galaxy Formation Simulations with Damped Lyman-$\alpha$ Abundance and Metallicity Evolution

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• Atacama Large Aperture Submillimeter Telescope (AtLAST) Science: Resolving the Hot and Ionized Universe through the Sunyaev-Zeldovich effect
• Multi-Epoch Machine Learning 2: Identifying physical drivers of galaxy properties in simulations
• Superclustering with the Atacama Cosmology Telescope and Dark Energy Survey: II. Anisotropic large-scale coherence in hot gas, galaxies, and dark matter
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